Digital Downloads: Bundled Products Does Not Give Download Link in Email

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I have a client who is selling digital downloads of PDF sheet music.

Example:
- Product 1: Song 1
- Product 2: Song 2
- Product 3: BUNDLE: Song 1 + Song 2

When I do a BUNDLE (Song 1 + Song 2), where Song 2 is added as a bundle item, I only get a download link (in the email ) for Song 1.
The bundled item, Song 2, does not show up in the checkout or in any emails.
The bundled digital download only shows in the Download Area of the Account section.

Many of the customers don't use the Account and Download area; they only download from the Invoice emails.

If any digital product is added as a bundle item, there is no download link for that bundled product in the emails or at checkout.

The workaround is that I have to add that single Song 2 PDF into Product 3 in the main *Images and Files" section.
This creates odd download link filenames:
song_2.pdf
song_2_019823746.pdf

Am I missing something here, or...